Similar to existing Google Calendar integration in the service’s Web-based version, the new feature works with the calendar — or calendars — stored on your device, and requires no configuration other than turning it on. (You can also choose which calendars do and don’t show up in Hipmunk, which is useful if you care a lot about work appointments and not so much about personal ones.)

In Hipmunk’s travel search — see the above screen shot — your appointments now show up as vertical bars, letting you see which flights fall before, during and after each schedule item. And the hotel search attempts to identify the location of meetings so it can plot it on the map and find lodging options that are nearby. (The more precisely you enter address info, the better this will work, but it figured out “Moscone Center” and showed me hotels near San Francisco’s convention center.)